573 lines
17 KiB
C
573 lines
17 KiB
C
/* -*- Mode: C ; c-basic-offset: 4 -*- */
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/*
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Copyright (C) 2011 Nedko Arnaudov
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#if defined(HAVE_CONFIG_H)
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#include "config.h"
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#endif
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#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include <assert.h>
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#include <dbus/dbus.h>
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#include "jackdbus.h"
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#include "controller_internal.h"
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#include "jack/session.h"
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#include "jack/control.h"
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#define JACK_DBUS_IFACE_NAME "org.jackaudio.SessionManager"
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static
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void
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jack_controller_control_send_signal_session_state_changed(
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jack_session_event_type_t type,
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const char * target)
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{
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dbus_uint32_t u32;
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u32 = type;
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if (target == NULL)
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{
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target = "";
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}
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jack_dbus_send_signal(
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JACK_CONTROLLER_OBJECT_PATH,
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JACK_DBUS_IFACE_NAME,
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"StateChanged",
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DBUS_TYPE_UINT32,
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&u32,
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DBUS_TYPE_STRING,
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&target,
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DBUS_TYPE_INVALID);
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}
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static bool start_detached_thread(void * (* start_routine)(void *), void * arg)
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{
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int ret;
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static pthread_attr_t attr;
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pthread_t tid;
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ret = pthread_attr_init(&attr);
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if (ret != 0)
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{
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jack_error("pthread_attr_init() failed with %d", ret);
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goto exit;
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}
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ret = pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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if (ret != 0)
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{
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jack_error("pthread_attr_setdetachstate() failed with %d", ret);
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goto destroy_attr;
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}
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ret = pthread_create(&tid, &attr, start_routine, arg);
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if (ret != 0)
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{
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jack_error("pthread_create() failed with %d", ret);
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goto destroy_attr;
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}
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jack_log("Detached thread %d created", (int)tid);
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destroy_attr:
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pthread_attr_destroy(&attr);
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exit:
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return ret == 0;
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}
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static void send_session_notify_reply(struct jack_session_pending_command * pending_cmd_ptr, jack_session_command_t * commands)
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{
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struct jack_dbus_method_call call;
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const jack_session_command_t * cmd_ptr;
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DBusMessageIter top_iter, array_iter, struct_iter;
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dbus_uint32_t u32;
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/* jack_dbus_error() wants call struct */
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call.message = pending_cmd_ptr->message;
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call.connection = pending_cmd_ptr->connection;
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if (commands == NULL)
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{
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jack_dbus_error(&call, JACK_DBUS_ERROR_GENERIC, "jack_session_notify() failed");
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goto send_reply;
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}
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jack_info("Session notify complete, commands follow:");
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call.reply = dbus_message_new_method_return(pending_cmd_ptr->message);
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if (call.reply == NULL)
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{
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goto oom;
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}
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dbus_message_iter_init_append(call.reply, &top_iter);
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if (!dbus_message_iter_open_container(&top_iter, DBUS_TYPE_ARRAY, "(sssu)", &array_iter))
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{
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goto unref;
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}
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for (cmd_ptr = commands; cmd_ptr->uuid != NULL; cmd_ptr++)
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{
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if (!dbus_message_iter_open_container(&array_iter, DBUS_TYPE_STRUCT, NULL, &struct_iter))
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{
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goto close_array;
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}
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if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_STRING, &cmd_ptr->uuid))
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{
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goto close_struct;
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}
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if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_STRING, &cmd_ptr->client_name))
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{
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goto close_struct;
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}
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if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_STRING, &cmd_ptr->command))
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{
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goto close_struct;
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}
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u32 = cmd_ptr->flags;
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if (!dbus_message_iter_append_basic(&struct_iter, DBUS_TYPE_UINT32, &u32))
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{
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goto close_struct;
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}
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jack_info("uuid='%s', client='%s', command='%s', flags=0x%"PRIX32, cmd_ptr->uuid, cmd_ptr->client_name, cmd_ptr->command, u32);
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if (!dbus_message_iter_close_container(&array_iter, &struct_iter))
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{
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goto close_array;
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}
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}
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jack_info("End of session commands.");
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if (!dbus_message_iter_close_container(&top_iter, &array_iter))
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{
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goto unref;
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}
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goto send_reply;
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close_struct:
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dbus_message_iter_close_container(&array_iter, &struct_iter);
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close_array:
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dbus_message_iter_close_container(&top_iter, &array_iter);
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unref:
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dbus_message_unref(call.reply);
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goto oom;
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send_reply:
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if (call.reply != NULL)
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{
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if (!dbus_connection_send(pending_cmd_ptr->connection, call.reply, NULL))
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{
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jack_error("Ran out of memory trying to queue method return");
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}
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dbus_connection_flush(pending_cmd_ptr->connection);
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dbus_message_unref(call.reply);
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}
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else
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{
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oom:
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jack_error("Ran out of memory trying to construct method return");
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}
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}
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#define controller_ptr ((struct jack_controller *)context)
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void * jack_controller_process_session_command_thread(void * context)
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{
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struct jack_session_pending_command * pending_cmd_ptr;
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jack_session_command_t * commands;
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jack_log("jack_controller_process_session_command_thread enter");
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pthread_mutex_lock(&controller_ptr->lock);
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loop:
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/* get next command */
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assert(!list_empty(&controller_ptr->session_pending_commands));
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pending_cmd_ptr = list_entry(controller_ptr->session_pending_commands.next, struct jack_session_pending_command, siblings);
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pthread_mutex_unlock(&controller_ptr->lock);
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jack_info("Session notify initiated. target='%s', type=%d, path='%s'", pending_cmd_ptr->target, (int)pending_cmd_ptr->type, pending_cmd_ptr->path);
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jack_controller_control_send_signal_session_state_changed(pending_cmd_ptr->type, pending_cmd_ptr->target);
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commands = jack_session_notify(controller_ptr->client, pending_cmd_ptr->target, pending_cmd_ptr->type, pending_cmd_ptr->path);
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send_session_notify_reply(pending_cmd_ptr, commands);
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if (commands != NULL)
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{
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jack_session_commands_free(commands);
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}
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pthread_mutex_lock(&controller_ptr->lock);
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/* keep state consistent by sending signal after to lock */
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/* otherwise the main thread may receive not-to-be-queued request and fail */
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jack_controller_control_send_signal_session_state_changed(0, NULL);
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/* remove the head of the list (queue) */
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assert(!list_empty(&controller_ptr->session_pending_commands));
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assert(pending_cmd_ptr == list_entry(controller_ptr->session_pending_commands.next, struct jack_session_pending_command, siblings));
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list_del(&pending_cmd_ptr->siblings);
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/* command cleanup */
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dbus_message_unref(pending_cmd_ptr->message);
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dbus_connection_ref(pending_cmd_ptr->connection);
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free(pending_cmd_ptr);
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/* If there are more commands, process them. Otherwise - exit the thread */
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if (!list_empty(&controller_ptr->session_pending_commands))
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{
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goto loop;
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}
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pthread_mutex_unlock(&controller_ptr->lock);
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jack_log("jack_controller_process_session_command_thread exit");
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return NULL;
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}
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#undef controller_ptr
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#define controller_ptr ((struct jack_controller *)call->context)
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static
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void
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jack_controller_dbus_session_notify(
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struct jack_dbus_method_call * call)
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{
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dbus_bool_t queue;
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const char * target;
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dbus_uint32_t u32;
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const char * path;
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jack_session_event_type_t type;
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struct jack_session_pending_command * cmd_ptr;
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if (!controller_ptr->started)
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{
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jack_dbus_only_error(call, JACK_DBUS_ERROR_SERVER_NOT_RUNNING, "Can't execute method '%s' with stopped JACK server", call->method_name);
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return;
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}
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if (!jack_dbus_get_method_args(
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call,
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DBUS_TYPE_BOOLEAN,
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&queue,
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DBUS_TYPE_STRING,
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&target,
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DBUS_TYPE_UINT32,
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&u32,
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DBUS_TYPE_STRING,
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&path,
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DBUS_TYPE_INVALID))
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{
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/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
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return;
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}
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if (*target == 0)
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{
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target = NULL;
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}
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type = (jack_session_event_type_t)u32;
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if (type != JackSessionSave &&
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type != JackSessionSaveAndQuit &&
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type != JackSessionSaveTemplate)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_INVALID_ARGS, "Invalid session event type %" PRIu32, u32);
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return;
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}
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pthread_mutex_lock(&controller_ptr->lock);
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if (list_empty(&controller_ptr->session_pending_commands))
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{
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if (!start_detached_thread(jack_controller_process_session_command_thread, controller_ptr))
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "Cannot start thread to process the command");
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goto unlock;
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}
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jack_log("Session notify thread started");
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}
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else if (!queue)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "Busy");
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goto unlock;
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}
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cmd_ptr = malloc(sizeof(struct jack_session_pending_command));
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if (cmd_ptr == NULL)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "malloc() failed for jack_session_pending_command struct");
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goto unlock;
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}
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cmd_ptr->message = dbus_message_ref(call->message);
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call->message = NULL; /* mark that reply will be sent asynchronously */
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cmd_ptr->connection = dbus_connection_ref(call->connection);
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/* it is safe to use the retrieved pointers because we already made an additional message reference */
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cmd_ptr->type = type;
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cmd_ptr->target = target;
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cmd_ptr->path = path;
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list_add_tail(&cmd_ptr->siblings, &controller_ptr->session_pending_commands);
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jack_log("Session notify scheduled. target='%s', type=%"PRIu32", path='%s'", target, u32, path);
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unlock:
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pthread_mutex_unlock(&controller_ptr->lock);
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}
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static
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void
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jack_controller_dbus_get_uuid_for_client_name(
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struct jack_dbus_method_call * call)
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{
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const char * client_name;
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char * client_uuid;
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if (!jack_dbus_get_method_args(
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call,
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DBUS_TYPE_STRING,
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&client_name,
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DBUS_TYPE_INVALID))
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{
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/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
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return;
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}
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client_uuid = jack_get_uuid_for_client_name(controller_ptr->client, client_name);
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if (client_uuid == NULL)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_get_uuid_for_client_name(\"%s\") failed", client_name);
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return;
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}
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jack_dbus_construct_method_return_single(call, DBUS_TYPE_STRING, (message_arg_t)(const char *)client_uuid);
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free(client_uuid);
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}
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static
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void
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jack_controller_dbus_get_client_name_by_uuid(
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struct jack_dbus_method_call * call)
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{
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const char * client_uuid;
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char * client_name;
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if (!jack_dbus_get_method_args(
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call,
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DBUS_TYPE_STRING,
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&client_uuid,
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DBUS_TYPE_INVALID))
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{
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/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
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return;
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}
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client_name = jack_get_client_name_by_uuid(controller_ptr->client, client_uuid);
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if (client_name == NULL)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_get_client_name_by_uuid(\"%s\") failed", client_uuid);
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return;
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}
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jack_dbus_construct_method_return_single(call, DBUS_TYPE_STRING, (message_arg_t)(const char *)client_name);
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free(client_name);
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}
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static
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void
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jack_controller_dbus_reserve_client_name(
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struct jack_dbus_method_call * call)
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{
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int ret;
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const char * client_name;
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const char * client_uuid;
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if (!jack_dbus_get_method_args(
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call,
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DBUS_TYPE_STRING,
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&client_name,
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DBUS_TYPE_STRING,
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&client_uuid,
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DBUS_TYPE_INVALID))
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{
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/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
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return;
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}
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ret = jack_reserve_client_name(controller_ptr->client, client_name, client_uuid);
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if (ret < 0)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_reserve_client_name(name=\"%s\", uuid=\"%s\") failed (%d)", client_name, client_uuid, ret);
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return;
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}
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jack_dbus_construct_method_return_empty(call);
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}
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static
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void
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jack_controller_dbus_has_session_callback(
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struct jack_dbus_method_call * call)
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{
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int ret;
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const char * client_name;
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message_arg_t retval;
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if (!jack_dbus_get_method_args(
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call,
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DBUS_TYPE_STRING,
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&client_name,
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DBUS_TYPE_INVALID))
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{
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/* The method call had invalid arguments meaning that jack_dbus_get_method_args() has constructed an error for us. */
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return;
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}
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ret = jack_client_has_session_callback(controller_ptr->client, client_name);
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if (ret < 0)
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{
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jack_dbus_error(call, JACK_DBUS_ERROR_GENERIC, "jack_client_has_session_callback(\"%s\") failed (%d)", client_name, ret);
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return;
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}
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retval.boolean = ret;
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jack_dbus_construct_method_return_single(call, DBUS_TYPE_BOOLEAN, retval);
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}
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static
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void
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jack_controller_dbus_get_session_state(
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struct jack_dbus_method_call * call)
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{
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DBusMessageIter iter;
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struct jack_session_pending_command * cmd_ptr;
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const char * target;
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dbus_uint32_t type;
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bool append_failed;
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call->reply = dbus_message_new_method_return(call->message);
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if (call->reply == NULL)
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{
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goto oom;
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}
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dbus_message_iter_init_append(call->reply, &iter);
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pthread_mutex_lock(&controller_ptr->lock);
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if (list_empty(&controller_ptr->session_pending_commands))
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{
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type = 0;
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target = "";
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}
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else
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{
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cmd_ptr = list_entry(controller_ptr->session_pending_commands.next, struct jack_session_pending_command, siblings);
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type = (dbus_uint32_t)cmd_ptr->type;
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target = cmd_ptr->target;
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}
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append_failed =
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!dbus_message_iter_append_basic(&iter, DBUS_TYPE_UINT32, &type) ||
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!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &target);
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pthread_mutex_unlock(&controller_ptr->lock);
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if (!append_failed)
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{
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return;
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}
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dbus_message_unref(call->reply);
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call->reply = NULL;
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oom:
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jack_error("Ran out of memory trying to construct method return");
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}
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#undef controller_ptr
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JACK_DBUS_METHOD_ARGUMENTS_BEGIN(Notify)
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JACK_DBUS_METHOD_ARGUMENT("queue", DBUS_TYPE_BOOLEAN_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("target", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("type", DBUS_TYPE_UINT32_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("path", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("result", "a(sssu)", true)
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JACK_DBUS_METHOD_ARGUMENTS_END
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JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetUuidForClientName)
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JACK_DBUS_METHOD_ARGUMENT("name", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("uuid", DBUS_TYPE_STRING_AS_STRING, true)
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JACK_DBUS_METHOD_ARGUMENTS_END
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JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetClientNameByUuid)
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JACK_DBUS_METHOD_ARGUMENT("uuid", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("name", DBUS_TYPE_STRING_AS_STRING, true)
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JACK_DBUS_METHOD_ARGUMENTS_END
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JACK_DBUS_METHOD_ARGUMENTS_BEGIN(ReserveClientName)
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JACK_DBUS_METHOD_ARGUMENT("name", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("uuid", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENTS_END
|
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JACK_DBUS_METHOD_ARGUMENTS_BEGIN(HasSessionCallback)
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JACK_DBUS_METHOD_ARGUMENT("client_name", DBUS_TYPE_STRING_AS_STRING, false)
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JACK_DBUS_METHOD_ARGUMENT("has_session_callback", DBUS_TYPE_BOOLEAN_AS_STRING, true)
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JACK_DBUS_METHOD_ARGUMENTS_END
|
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JACK_DBUS_METHOD_ARGUMENTS_BEGIN(GetState)
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JACK_DBUS_METHOD_ARGUMENT("type", DBUS_TYPE_UINT32_AS_STRING, true)
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JACK_DBUS_METHOD_ARGUMENT("target", DBUS_TYPE_STRING_AS_STRING, true)
|
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JACK_DBUS_METHOD_ARGUMENTS_END
|
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JACK_DBUS_SIGNAL_ARGUMENTS_BEGIN(StateChanged)
|
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JACK_DBUS_SIGNAL_ARGUMENT("type", DBUS_TYPE_UINT32_AS_STRING)
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JACK_DBUS_SIGNAL_ARGUMENT("target", DBUS_TYPE_STRING_AS_STRING)
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JACK_DBUS_SIGNAL_ARGUMENTS_END
|
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|
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JACK_DBUS_METHODS_BEGIN
|
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JACK_DBUS_METHOD_DESCRIBE(Notify, jack_controller_dbus_session_notify)
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JACK_DBUS_METHOD_DESCRIBE(GetUuidForClientName, jack_controller_dbus_get_uuid_for_client_name)
|
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JACK_DBUS_METHOD_DESCRIBE(GetClientNameByUuid, jack_controller_dbus_get_client_name_by_uuid)
|
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JACK_DBUS_METHOD_DESCRIBE(ReserveClientName, jack_controller_dbus_reserve_client_name)
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JACK_DBUS_METHOD_DESCRIBE(HasSessionCallback, jack_controller_dbus_has_session_callback)
|
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JACK_DBUS_METHOD_DESCRIBE(GetState, jack_controller_dbus_get_session_state)
|
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JACK_DBUS_METHODS_END
|
|
|
|
JACK_DBUS_SIGNALS_BEGIN
|
|
JACK_DBUS_SIGNAL_DESCRIBE(StateChanged)
|
|
JACK_DBUS_SIGNALS_END
|
|
|
|
JACK_DBUS_IFACE_BEGIN(g_jack_controller_iface_session_manager, JACK_DBUS_IFACE_NAME)
|
|
JACK_DBUS_IFACE_EXPOSE_METHODS
|
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JACK_DBUS_IFACE_EXPOSE_SIGNALS
|
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JACK_DBUS_IFACE_END
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